Java 如何使表组件中的所有行拉伸到相同的高度？

我正在使用Jaspersoft iReport designer 4.7.0。我想创建一个包含3列的表，表中的每个单元格都需要拉伸到数据源的最大对象

我尝试过改变文本元素positionfloat的属性；相对于最高的对象使用溢出拉伸-为true，拉伸类型-但仅适用于一行

我希望这对表的所有行都有效

电流输出

预期产出

**使用jrxml*

   <?xml version="1.0" encoding="UTF-8"?>
    <jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="report3" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="f32dfce1-c0d4-4f20-b896-653e7497d7ba">
        <property name="ireport.zoom" value="1.0"/>
        <property name="ireport.x" value="0"/>
        <property name="ireport.y" value="0"/>
        <style name="table">
            <box>
                <pen lineWidth="1.0" lineColor="#000000"/>
            </box>
        </style>
        <style name="table_TH" mode="Opaque" backcolor="#F0F8FF">
            <box>
                <pen lineWidth="0.5" lineColor="#000000"/>
            </box>
        </style>
        <style name="table_CH" mode="Opaque" backcolor="#BFE1FF">
            <box>
                <pen lineWidth="0.5" lineColor="#000000"/>
            </box>
        </style>
        <style name="table_TD" mode="Opaque" backcolor="#FFFFFF">
            <box>
                <pen lineWidth="0.5" lineColor="#000000"/>
            </box>
        </style>
        <subDataset name="tabeDataSet" uuid="46e73a3d-e883-4c74-a062-6984cc6dac58">
            <field name="id" class="java.lang.String"/>
            <field name="city" class="java.lang.String"/>
            <field name="street" class="java.lang.String"/>
        </subDataset>
        <subDataset name="Table Dataset 1" uuid="4a76bbab-d785-49f2-82aa-705ea0a2e0d1"/>
        <subDataset name="Table Dataset 2" uuid="984926ca-9b74-4713-a4a8-25e7e3a32697"/>
        <parameter name="tableData" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
        <detail>
            <band height="191">
                <componentElement>
                    <reportElement uuid="6e73c624-495f-4558-bfe4-65a0487825ab" key="table 1" x="74" y="49" width="360" height="52"/>
                    <jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">
                        <datasetRun subDataset="tabeDataSet" uuid="dcaeff11-66ee-47b5-af06-d2f183cb5830">
                            <dataSourceExpression><![CDATA[$P{tableData}]]></dataSourceExpression>
                        </datasetRun>
                        <jr:column uuid="ad308669-ebfb-43ca-b518-326779bbb20e" width="90">
                            <jr:detailCell height="20">
                                <textField isStretchWithOverflow="true">
                                    <reportElement uuid="34fe3944-c103-4c85-b509-22df1b589d11" positionType="Float" stretchType="RelativeToTallestObject" x="0" y="0" width="90" height="20"/>
                                    <box>
                                        <pen lineWidth="0.5"/>
                                        <topPen lineWidth="0.5"/>
                                        <leftPen lineWidth="0.5"/>
                                        <bottomPen lineWidth="0.5"/>
                                        <rightPen lineWidth="0.5"/>
                                    </box>
                                    <textElement/>
                                    <textFieldExpression><![CDATA[$F{id}]]></textFieldExpression>
                                </textField>
                            </jr:detailCell>
                        </jr:column>
                        <jr:column uuid="0dbf249d-ee6e-4431-bba2-6d13b610582f" width="90">
                            <jr:detailCell height="20">
                                <textField isStretchWithOverflow="true">
                                    <reportElement uuid="886ba9a8-98bc-43cf-9abd-c6fd0410029a" positionType="Float" stretchType="RelativeToTallestObject" x="0" y="0" width="90" height="20"/>
                                    <box>
                                        <pen lineWidth="0.5"/>
                                        <topPen lineWidth="0.5"/>
                                        <leftPen lineWidth="0.5"/>
                                        <bottomPen lineWidth="0.5"/>
                                        <rightPen lineWidth="0.5"/>
                                    </box>
                                    <textElement/>
                                    <textFieldExpression><![CDATA[$F{city}]]></textFieldExpression>
                                </textField>
                            </jr:detailCell>
                        </jr:column>
                        <jr:column uuid="edbd158e-278a-4a5d-98ab-4ea592001ee9" width="90">
                            <jr:detailCell height="20">
                                <textField isStretchWithOverflow="true">
                                    <reportElement uuid="59ec1fc2-0a76-4c4c-96b0-7e2b5fbad3df" positionType="Float" stretchType="RelativeToTallestObject" x="0" y="0" width="90" height="20"/>
                                    <box>
                                        <pen lineWidth="0.5"/>
                                        <topPen lineWidth="0.5"/>
                                        <leftPen lineWidth="0.5"/>
                                        <bottomPen lineWidth="0.5"/>
                                        <rightPen lineWidth="0.5"/>
                                    </box>
                                    <textElement/>
                                    <textFieldExpression><![CDATA[$F{street}]]></textFieldExpression>
                                </textField>
                            </jr:detailCell>
                        </jr:column>
                    </jr:table>
                </componentElement>
            </band>
        </detail>
    </jasperReport>

否 当一行拉伸时，没有可以设置的属性来实现所有行的大小相同

AFIK升级版‎6.7.0本答复的日期

当然，您可以手动增加jrxml文件中的高度，但如果您想动态地增加高度，则需要执行以下操作：

计算在java中循环数据集所需的高度使用字体度量查找文本的最大高度请参阅了解如何使用字体度量

将jrxml作为对象加载，然后设置新高度

粗略的例子，考虑到我已经在汇总区中的表组件上设置了id，并且每个单元格正好有一个文本字段

int newHeight = 40;
//Load into desgin  
JasperDesign design = JRXmlLoader.load("path/to/my/report.jrxml");
JRDesignBand summary = (JRDesignBand) design.getSummary();
//I have set id on my component in jrxml so that I find it quickly
JRDesignComponentElement tblElement = (JRDesignComponentElement) summary.getElementByKey("tbl");
StandardTable tbl = (StandardTable) tblElement.getComponent();
//loop all columns and set new height to both cell and textField
for (BaseColumn bc : tbl.getColumns()) {
    StandardColumn col = (StandardColumn) bc;
    DesignCell cell = (DesignCell) col.getDetailCell();
    JRDesignTextField tf = (JRDesignTextField) cell.getChildren().get(0);
    cell.setHeight(newHeight);
    tf.setHeight(newHeight);
}
//Get my report from design and later fill it.
JasperReport report = JasperCompileManager.compileReport(design);

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请与共享报告预览data@Rathnayake我已经附上了当前和预期的报告输出格式。请看一看并advise@Rathnayake这是可以实现的吗？请帮忙！抱歉迟到了

isStretchWithOverflow=“true”

根据数据长度动态设置行高。所以你的格式在默认情况下是不可能的。我对此一无所知。请参考Petter的回答谢谢您的详细信息@Petter让我试试上述建议的方法。